2007:Symbolic Melodic Similarity

Overview

This page is devoted to discussions of the MIREX 07 Symbolic Melodic Similarity contest. Discussions on the MIREX 07 Symbolic Melodic Similarity contest planning list will be briefly digested on this page. A full digest of the discussions is available to subscribers from the MIREX 07 Symbolic Melodic Similarity contest planning list archives. You can subscribe to this list to participate in the discussion.

You can additionaly read information about the Symbolic Melodic Similarity tasks that were run in the 2005 and 2006 MIREX editions.

Task description

Retrieve the most similar items from a collection of symbolic documents, given a query, and rank them by similarity. The following tasks could be defined this year:

Task 1: Monophonic to monophonic. Both the query and the documents in the collection will be monophonic.

Task 2: Monophonic to polyphonic. The documents will be polyphonic (i. e. can have simultaneous notes), but the query will still be monophonic.

Task 3: Polyphonic to polyphonic. Both the query and documents will be polyphonic.

The description of these tasks is intentionally open, so that the details can be defined as result of the discussion. Also, the realization of these tasks is subject to the numbers of participants interested in each task.

Evaluation and ground truth

The same method for building the ground truth than last year can be used. This method has the advantage that no ground truth needs to be built in advance. After the algorithms have been submitted, their results are pooled for every query, and human evaluators are asked to judge the relevance of the matches for some queries. To make this a feasible task, it is important that the algorithms do not only return the names of the matching MIDI files for task 2 and 3, but also where the matching segment starts and ends in the matching MIDI file.

Potencial participants

If you think there is a slight chance that you might consider participating, please add your name here. Please indicate as well the tasks in which you could be interested in participating.

• Carlos G├│mez (monophonic-to-monophonic)